Release 6.0.1-preview.1

[YogeshPraj]

Summary

Cuts a preview release rolling up the three bug-fix PRs landed since 6.0.0:

• Restore compiled-expression cache in RuleExpressionParser (fixes #673) #727 — Restore compiled-expression cache (fixes Huge Performance Degredation in version 5.0.1 #673, 100×–1900× perf wins on the affected paths)
• Fix #624, #704, #711, #714, #717: action exception propagation, list schema merging, OutputExpression error hint, global-param dedup, object-return diagnostics #728 — EnableExceptionAsErrorMessage = false does not actually throw exception, but ignores/supresses it #624, Rule Parameter is inferring first element type to later elements in expandoObject list #704, OutputExpressionAction always throws “Expression is missing an 'as' clause” when returning an object #711, Global parameters will be executed multiple times #714, Dynamic LINQ execution fails silently or throws parsing error when method returns object #717 batch
• Fix #519, #576, #696 + regression guards for #590, #608, #581, #606 #729 — ExceptionMessage not populated in ExecuteActionWorkflowAsync #519, Using OnSuccess/OnFailure Actions within a rule causes a NullReferenceException when the Context is not defined #576, The interpolation expression for the sub-expression "ErrorMessage" is not functioning. #696 + regression guards for Custom Name of Parameter not being honored.  #581, If an execution took an exception in the next runs error message is transfered even if it successes. #590, Lambda variable identifier treated as an unknown identifier #606, Strange behavior with UseFastExpressionCompiler = true when local param contains plus operator #608

Changes

• src/RulesEngine/RulesEngine.csproj: <Version> 6.0.0 → 6.0.1-preview.1
• CHANGELOG.md: new 6.0.1-preview.1 section with per-issue summary

Test plan

• All 155 unit tests pass on net6 / net8 / net9 / net10
• No code changes — release bookkeeping only